The expert meeting, held at Ottawa on 15 and 16 March 2018, brought together 27 worldwide experts from States, non-governmental organizations and academic institutions, which shared their views on various issues influencing the collaboration between NPAs and NGOs. The discussions aimed at significantly improving the collaboration between NPAs and NGOs in the prosecution of international crimes such as genocide, crimes against humanity and war crimes. An important outcome of this event is a series of four blogposts authored by Joseph Rikhof, Silviana Cocan and Érick Sullivan. The first post was published today in French and Spanish in the blog Quid Justiae, and in English in the PKI Global Justice Journal. The three other blogposts will follow every Thursday until the 21stof June.